EP2920105A1 - Système de direction pour un chariot de manutention - Google Patents

Système de direction pour un chariot de manutention

Info

Publication number
EP2920105A1
EP2920105A1 EP13786454.2A EP13786454A EP2920105A1 EP 2920105 A1 EP2920105 A1 EP 2920105A1 EP 13786454 A EP13786454 A EP 13786454A EP 2920105 A1 EP2920105 A1 EP 2920105A1
Authority
EP
European Patent Office
Prior art keywords
steering
hydraulic
rotatably mounted
cylinder
synchronizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13786454.2A
Other languages
German (de)
English (en)
Other versions
EP2920105B1 (fr
Inventor
Jürgen KELLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubtex Maschinenbau GmbH and Co KG
Original Assignee
Hubtex Maschinenbau GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=49546392&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2920105(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hubtex Maschinenbau GmbH and Co KG filed Critical Hubtex Maschinenbau GmbH and Co KG
Publication of EP2920105A1 publication Critical patent/EP2920105A1/fr
Application granted granted Critical
Publication of EP2920105B1 publication Critical patent/EP2920105B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07568—Steering arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/10—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of power unit
    • B62D5/12—Piston and cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/08—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in a single plane transverse to the longitudinal centre line of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or systems

Definitions

  • the invention relates to a steering system for an industrial truck, in which at least two hydraulically steerable wheelsets are provided.
  • a steering system is already known for example from DE 10 2010 016 470 B4.
  • a disadvantage of this steering system, in which the drive of the steering is effected by means of chains, is that the assembly and maintenance of the chains are difficult. For example, the chains must be tightened, etc.
  • difficulties can arise when, for example, steered in the state, by vibrations that may result from rubber restoring forces of the wheel on the ground.
  • the electronic coupling between the wheels is also expensive.
  • the invention has set itself the task of creating a steering system which is improved at least with regard to one of the disadvantages mentioned.
  • each wheel set preferably comprises at least one rotatably mounted wheel.
  • the wheelsets are each steered by means of a hydraulic linear motor, which is designed as a synchronizing cylinder is. (These linear motors can also be referred to as steering motors.)
  • the at least two synchronous cylinders are operatively connected to each other.
  • Each of the at least two synchronizing cylinders preferably has exactly one active piston rod which serves to transmit the translatory movement of the piston.
  • the provided for achieving the synchronization further piston rod of the synchronizing cylinder is preferably not connected with its free end and therefore does not serve to transmit a translational movement.
  • the at least two synchronizing cylinders are arranged in a common hydraulic circuit, which is preferably closed.
  • the piston of each hydraulic cylinder divides the interior of the cylinder into a chamber facing the active piston rod and a chamber facing away from the active piston rod.
  • This chamber is therefore referred to below as Glashunt.
  • this chamber is therefore referred to below as the pressure chamber.
  • the hydraulic circuit is configured such that the tension chamber of a synchronizing cylinder is connected to the pressure chamber of another synchronizing cylinder.
  • the pressure chamber of the synchronizing cylinder whose tension chamber is connected to the pressure chamber of another synchronizing cylinder, further connected to a hydraulic valve.
  • the tension chamber of the cylinder, whose pressure chamber is connected to the tension chamber of another cylinder is preferably also connected to a hydraulic valve, preferably to the same hydraulic valve. This ensures that perform the active piston rods of the at least two constant velocity cylinder similar movements. If, for example, the active piston rod of a synchronizing cylinder extends, then the active piston rod of the at least one further synchronizing cylinder also extends.
  • the tension chamber of one constant velocity cylinder is preferably connected to the pressure chamber of the other constant velocity cylinder, and the two remaining chambers of the cylinders are preferably connected to the hydraulic valve.
  • the two synchronizing cylinders are arranged parallel to each other and the active piston rods of the two synchronizing cylinders point in the same direction.
  • the two active piston rods then always carry out parallel, synchronous movements.
  • Each wheelset also includes for the purpose of steerability of the at least one wheel preferably a rotatably mounted device in which this wheel is rotatably mounted.
  • This device may for example be forked.
  • This device preferably comprises a wheel stool or is formed by a wheel stool.
  • the active piston rod of the synchronizing cylinder preferably acts at a point on the rotatably mounted device, which is offset from the axis of rotation of the rotatably mounted device (steering axis). This provides the necessary lever to provide torque.
  • the active piston rod of the one synchronizing cylinder acts at a point on the associated rotatably mounted device of the associated wheel set, which is offset to another side of the axis of rotation of the rotatably mounted device, as the corresponding point of the active piston rod of the at least one other synchronizing cylinder with respect to the axis of rotation of the local rotatably mounted device.
  • the active piston rod of the synchronizing cylinder acts in each case via a steering lever on the associated rotatably mounted device of the wheelset.
  • the steering lever is rotatably mounted on the associated active piston rod and rotatably mounted on the associated rotatably mounted device.
  • the steering lever is rotatably mounted with one end on the active piston rod and with the opposite end to the rotatably mounted device.
  • the rotatably mounted devices preferably each have a recess into which the steering levers - particularly preferably only in certain steering situations - occur.
  • the two sets of wheels are hydraulically coupled with each other.
  • the steering system preferably has a steering transmitter, in particular a steering wheel. More preferably, a Lenkorbitroi is provided with which the steering transmitter - preferably mechanically - is connected.
  • At least one first steering motor is provided.
  • two first steering motors are provided and these are further preferably formed by the coupled in the manner described above hydraulic synchronous cylinder.
  • the steering motors are preferably used to operate two steerable first wheel sets, for which the steering commands are manually specified.
  • the at least one or the first two steering motors are preferably hydraulically connected or connectable to the steering transmitter. In addition, they are preferably selectively drivable as a function of a steering angle setpoint generated by the steering control device.
  • a first Lenkwinkelaufêt is provided. This preferably detects the steering angle of the at least one manually steerable first wheel.
  • the steering angle sensor preferably detects the steering angle of exactly one of these two first wheelsets.
  • the Lenkwinkelaufêt is preferably operatively connected to a steering control for program switching.
  • At least one further steerable, motor-steered second wheelset is provided.
  • the steering motor of this second set of wheels is preferably also connected to the steering encoder or connectable. It is also preferably also selectively driven in response to a steering angle setpoint generated by the steering control device.
  • a second Lenkwinkelaufêt is provided which detects the steering angle of this second wheel.
  • the second Lenkwinkelaufillon is preferably also operatively connected to a steering control. It is preferably provided a switching valve, by means of which between the hydraulic connection of the Lenkorbitrols with the at least one first hydraulic steering motor and the hydraulic connection of the Lenkorbitrols can be changed with the second hydraulic steering motor.
  • the depending on the position of the switching valve is not hydraulically connected to the Lenkorbitroi steering motors are preferably brought into a specific position depending on a steering angle setpoint generated by the steering control device and remain there.
  • the at least one motor-driven second wheelset is operatively connected to a second hydraulic steering motor.
  • This engine may be a rotary engine or a synchronous cylinder.
  • This synchronous cylinder may have the same shape and size as the synchronizing cylinder of the first wheelsets.
  • the steering control device is preferably a steering computer with a device for storing a plurality of steering programs.
  • the steering angle sensors may be electrical or electronic steering angle sensors.
  • Figure 1 is a top view of a part of an industrial truck according to a first embodiment.
  • Fig. 2 shows a detail of the truck of Fig. 1 in six different
  • FIG. 3 is a perspective view of a part of the truck according to the first embodiment
  • Fig. 4 is a detail view of Fig. 3;
  • Fig. 5 schematically - a block diagram of a steering system according to the invention of a second embodiment of the example of a three-wheel-drive truck in longitudinal travel;
  • FIG. 6 shows the same block diagram of the steering system as in FIG. 5, using the example of the same industrial truck in transverse travel.
  • FIG. 1 shows a detail of an industrial truck according to a first exemplary embodiment with a first exemplary embodiment of a steering system according to the invention.
  • ends of the segments 51, 52 a wheel set 1, 2 is arranged in each case.
  • a wheel set in each case comprises exactly one wheel. It is conceivable that a wheel set comprises a plurality of wheels, that, for example, twin wheels are provided.
  • the truck has at least one not shown in Fig. 1 further wheelset. It may, for example, be a three-wheeled or four-wheeled vehicle.
  • Two hydraulic linear motors arranged parallel to one another are shown, which are designed as synchronizing cylinders 3, 4.
  • the synchronizing cylinders are in the direction R of the longitudinal extension of the Segments 51, 52 arranged in these. So they do not run obliquely in the segments 51, 52.
  • Each synchronizing cylinder 3, 4 has an active piston rod 10, 1 1 on.
  • each synchronizing cylinder also has a passive piston rod 53, 54, the end of which is free and which does not serve to transmit a translatory movement.
  • each wheel set 1, 2 has a rotatably mounted device 12, 13. This is designed as a Radschemel 1 7, 18 and rotatably supported by a steering bearing 57, 58 about a steering axis A, A '.
  • the steering axis A, A ' is preferably vertical.
  • the active piston rod 10, 1 1 of the synchronizing cylinder 3, 4 acts in each case at a point P, P 'on the wheel stool 17, 18 which is offset from the axis of rotation A, A 'is arranged.
  • the active piston rod 10, 1 1 of each synchronizing cylinder is not directly connected to the Radschemel, but by means of a steering lever 14, 15.
  • the connection of the synchronous cylinder to the Radschemel thus takes place via steering levers.
  • the steering lever 14, 15 is curved. As shown in particular the left and the middle upper view in Fig. 2, a larger steering angle is thereby achieved, since the steering lever 14, 15 can escape the illustrated in Fig. 2 as a circle Radschemel 17, 18.
  • the two steering levers 14, 15 are mirror-symmetrical to each other and arranged.
  • the respective active piston rod 10, 1 1 is pivotally connected to the respective steering lever 14, 15, the respective steering levers 14, 15 on the respective Radschemel 17, 18 each about an axis of rotation A and A 'parallel axis.
  • the two synchronizing cylinders 3, 4 are operatively connected to each other, namely by being arranged in a common hydraulic circuit, which is closed in the embodiment shown.
  • Fig. 1 shows that the tension chamber 6 of the left synchronizing cylinder 3 is connected to the pressure chamber 7 of the synchronizing cylinder 4 shown on the right in Fig. 1 by a hydraulic line. It also shows that the pressure chamber 16 of the synchronizing cylinder 3 shown on the left is connected to a hydraulic valve 8. Also the Switzerlandkannnner 9 of the synchronizing cylinder 4 shown on the right is connected to this hydraulic valve 8.
  • the hydraulic valve 8 may also be referred to as a steering unit or steering valve.
  • the hydraulic valve 8 can connect in dependence of the position of a steering transmitter, for example, the rotational position of a steering wheel, not shown in FIGS. 1 to 4, in Fig. 1 right and left of him outgoing hydraulic lines with the return or pressure port of a hydraulic pump, not shown ,
  • the hydraulic line leading off to the left of the hydraulic valve 8 in FIG. 1 may be connected to the pressure port of a hydraulic pump, not shown, and the hydraulic pump shown in FIG. 1 right hydraulic line with a return connection.
  • hydraulic fluid flows into the pressure chamber 16 of the left synchronizing cylinder.
  • the active piston rod 10 therefore extends.
  • the piston displaces hydraulic fluid from the tension chamber 6 of the left-hand synchronizing cylinder 3.
  • both wheel stools have a recess 59.
  • the steering lever 14 enters into this recess in certain steering situations and therefore makes possible these steering situations.
  • the recesses so an increase in the possible steering angle is achieved.
  • the interaction of the curvature of the steering lever and the recess leads to a large steering angle, without weakening the wheel arch 17, 18 too large recesses too much.
  • the possible steering angle ranges from an approximately 50 degree position of a wheel to the direction R of the longitudinal extent of the segment (top left) up to an approximately 180 degree position (bottom right). The wheel can thus be pivoted about 130 degrees.
  • FIGS. 3 and 4 also show that the steering lever 14 is arranged between the steering bearing 57 and the wheel 55 in the vertical direction. This leads to a very low height.
  • FIGS. 5 and 6 show a second embodiment. Unlike in Fig. 1, hydraulic lines are shown only schematically in Figs. 5 and 6. Therefore, a line in Figs. 5 and 6 may stand, for example, for two hydraulic lines of a circuit.
  • FIGS. 5 and 6 schematically show the chassis 19 of a truck designated as a whole as 100. All wheel sets 1, 2, 20 are arranged perpendicular to the plane extending axes A, ⁇ ', A "steerable.
  • each one of the wheelsets associated steering motors 3, 4, 21 are provided.
  • the steering motors 3, 4 are designed as hydraulic synchronizing cylinders and the steering motor 21 is configured in the exemplary embodiment shown as a hydraulic rotary motor with a flexible tension member 22 for transmitting movement. It is conceivable that the steering motor 21 is designed as a hydraulic cylinder, such as synchronous cylinder, whose shape and size corresponds to the other steering motors.
  • the wheel sets 1, 2 shown in FIGS. 5 and 6 are referred to below as load wheel sets, the lower wheel set 20 with the wheel 60 as a further wheel set.
  • At exactly one of the load wheel sets 1 and at the other wheelset 20 is an example electrically or electronically operating Lenkwinkelaufsacrificing 24, 25th intended.
  • the Lenkwinkelaufsacrificing 24 is connected via a signal line 27, the Lenkwinkelaufsacrificing 25 via a signal line 28 with a Lenk thoroughlyungsein- device 30, which is designed as a steering computer 31 with a device for storing a plurality of steering programs.
  • Via further signal lines 32, 33 of the steering computer 31 is connected to facilities for steering program selection 34 and to the direction of travel 35.
  • the steering control device 30 is connected via a signal line 36 to a steering block 37.
  • This steering block 37 is a multi-valve arrangement which, depending on the signal applied via the signal line via a hydraulic line 38 from a hydraulic pump not shown in the drawing hydraulic fluid to the steering motors 3, 4, 21 via hydraulic lines 39, 40, 41 supplies.
  • the steering motors 3, 4 of the load wheels are, however, directly connected to each other, as in the embodiment shown in FIG. 1, so that the supply of hydraulic fluids with respect to the steering motors 3 and 4 is not individual, but depends on each other, except for a small amount of oil which compensates for possible leaks via a compensating valve in the piston.
  • the steering block 37 is connected via a hydraulic line 42 to a priority valve 43.
  • the priority valve 43 is not supplied to actuate the steering motors 3, 4, 21 required hydraulic fluid.
  • a hydraulic line 44 a Lenkorbitroi 46 fed, otherwise via a hydraulic line 45 a not shown in the drawing work control block for acting on other hydraulically actuated components of the truck.
  • the actuation of the Lenkorbitrols 46 is a mechanically connected to it steering arm 47 in the form of a steering wheel.
  • the steering korbitrol 46 connected by means of a switching valve 48 via a hydraulic line 49 directly to the first steering motor 3 of the load wheel 1 sets. From this generated during driving resistances are transmitted to the steering transmitter 47 and felt as a driving feeling.
  • the respective steering angle of the first load wheel set 1 can be supplied via the first steering angle sensor 24 and the signal line 27 of the steering control device. A Lenkwinkelaufillon for the second load wheel 2 is not required, since the steering angle ü is fixed on the hydraulic coupling with the first load wheel. A signal line between the steering control device and this wheel is therefore unnecessary.
  • At least one steerable wheel is manually guided by a hydraulic connection with the steering transmitter by means of a steering transmitter 47 in the form of a steering wheel.
  • a steering transmitter 47 in the form of a steering wheel.
  • one of the load wheel sets 1 is manually guided by a hydraulic connection with the steering transmitter. Due to the hydraulic coupling, in this case a steering of the second load wheel set 2 takes place simultaneously.
  • the further wheel set 20 is manually guided by a hydraulic connection to the steering transmitter.
  • the steering computer 31 controls the steering block 37 so that initially on the hydraulic lines 39 , 40, 41 all Rads decisiv- ze 1, 2, 20 are pivoted by 90 °.
  • the changeover valve 48 is switched over to the hydraulic motor 50 leading to the steering motor 21 of the further wheelset 20, so that the Lenkorbitroi 46 now directly connected to the steering motor 21 of the other wheelset 20 and steering resistors of this wheel set in the steering transmitter 47 can be felt.
  • the load wheel sets 1 and 2 now remain rigid.
  • the additional gearset 20 is not steered in the longitudinal travel shown in FIG.
  • the wheelset 20 is thus operated exclusively in transverse travel and then directly hydraulically in this embodiment. All wheelsets are in the embodiment shown in FIGS. 5 and 6 preferably either manually steered by a hydraulic connection with the steering transmitter or they are rigid.
  • the switching valve 48 When switching the switching valve 48, the previously manually steered wheel sets are brought by means of the steering device 30 in a specific steering position and are then rigid until a renewed switching of the switching valve 48. And the previously rigid wheelsets are steered manually.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Power Steering Mechanism (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

L'invention concerne un système de direction pour un chariot de manutention (100) pour lequel au moins deux jeux de roues (1, 2) hydrauliquement orientables sont prévus, ces jeux de roues (1, 2) étant respectivement orientables au moyen d'un moteur linéaire hydraulique (3, 4) qui est conçu comme un vérin synchrone et les deux vérins synchrones (3, 4) sont en liaison fonctionnelle l'un avec l'autre.
EP13786454.2A 2012-11-15 2013-10-30 Système de direction pour un chariot de manutention Active EP2920105B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012110988.5A DE102012110988B4 (de) 2012-11-15 2012-11-15 Lenksystem für ein Flurförderzeug und Flurförderzeug
PCT/EP2013/072694 WO2014075921A1 (fr) 2012-11-15 2013-10-30 Système de direction pour un chariot de manutention

Publications (2)

Publication Number Publication Date
EP2920105A1 true EP2920105A1 (fr) 2015-09-23
EP2920105B1 EP2920105B1 (fr) 2017-12-27

Family

ID=49546392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13786454.2A Active EP2920105B1 (fr) 2012-11-15 2013-10-30 Système de direction pour un chariot de manutention

Country Status (6)

Country Link
US (1) US9751738B2 (fr)
EP (1) EP2920105B1 (fr)
AU (1) AU2013347045B2 (fr)
BR (1) BR112015009685A2 (fr)
DE (1) DE102012110988B4 (fr)
WO (1) WO2014075921A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10167015B2 (en) * 2015-05-11 2019-01-01 GM Global Technology Operations LLC System for retrofitting vehicle automation
GB2571736A (en) 2018-03-06 2019-09-11 Combilift Hydraulic steering systems for vehicle wheels
DE102019108589A1 (de) * 2019-04-02 2020-10-08 Hubtex Maschinenbau Gmbh & Co. Kg Lenkverfahren eines Flurförderzeugs und Flurförderzeug
DE102020119276A1 (de) * 2020-07-22 2022-01-27 A & A Logistik-Equipment GmbH & Co. KG Radarmstapler, vorzugsweise als AGV
CN112158776B (zh) * 2020-09-25 2021-10-01 山河智能装备股份有限公司 一种支重轮结构及工具车

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB899439A (en) 1959-12-15 1962-06-20 Raymond Corp Material handling truck
US3620321A (en) * 1969-04-01 1971-11-16 Standard Alliance Ind Tractor drive conversion
US3724585A (en) 1971-04-15 1973-04-03 Clark Equipment Co Fluid steering system
US4117905A (en) 1976-11-22 1978-10-03 Anthony Company Steering system for articulated vehicles
JPS62110573A (ja) 1985-11-08 1987-05-21 Mitsubishi Motors Corp 後輪操舵装置
DE4025543A1 (de) 1990-08-11 1992-02-13 Linde Ag Lenkachse fuer ein flurfoerderzeug
US5653304A (en) * 1994-04-20 1997-08-05 University Of Arkansas, N.A. Lever steering system
IT1281790B1 (it) 1995-05-03 1998-03-03 Carer Snc Dell Ing Angelo Gaet Carrello elevatore a quattro ruote con stretto raggio di sterzata e stabilita' migliorata
US5904365A (en) * 1997-09-11 1999-05-18 Dillon; Ben N. Combine with powered and steerable grain trailer
US6070691A (en) 1997-10-16 2000-06-06 Jerry E. Hansen Self-aligning hydraulic steering system
JP3121809B1 (ja) 1999-08-31 2001-01-09 ティー・シー・エム株式会社 横行システムを持ったフォークリフト
WO2000071459A1 (fr) 1999-05-21 2000-11-30 Tcm Corporation Levier a fourche a systeme transversal
WO2001012493A1 (fr) 1999-08-16 2001-02-22 Combilift Research & Development Limited Mecanisme de direction synchronisee
JP2002046992A (ja) * 2000-08-04 2002-02-12 Tcm Corp 横行システムを持ったフォークリフト
US6488114B1 (en) * 2001-02-12 2002-12-03 Balzer, Inc. Grain cart
JP2004231111A (ja) 2003-01-31 2004-08-19 Mitsubishi Heavy Ind Ltd 操舵装置
DE10319448A1 (de) 2003-04-30 2004-11-18 Linde Ag Lenkantrieb mit einem Lenkaktuator für zwei Drehschemel
ITMO20030223A1 (it) 2003-07-31 2005-02-01 Gaetani Angelo Dispositivo di sterzatura.
US7152709B2 (en) 2003-12-23 2006-12-26 Hyo Chun Co., Ltd. Industrial vehicle
JP4395750B2 (ja) 2004-12-09 2010-01-13 株式会社豊田自動織機 産業車両用シリンダカバー及び産業車両
US7506719B2 (en) 2005-03-23 2009-03-24 Clark Equipment Company Self-synchronizing hydraulic system
US20070289798A1 (en) 2006-06-17 2007-12-20 Manfred Kaufmann Sideloader forklift with all wheel steering
WO2008049979A1 (fr) 2006-10-23 2008-05-02 Renault Trucks Système de direction assurant la commande de l'angle de braquage des roues directrices d'un véhicule
US8069945B2 (en) * 2008-08-26 2011-12-06 Trw Automotive U.S. Llc Method and apparatus for rear wheel steering control
IT1391837B1 (it) 2008-11-11 2012-01-27 Ognibene Spa Dispositivo di sterzatura idrostatica
DE102010016470B4 (de) 2010-04-16 2012-03-08 Hubtex Maschinenbau Gmbh & Co. Kg Lenkverfahren und Lenksysteme für ein Flurförderzeug

Also Published As

Publication number Publication date
US9751738B2 (en) 2017-09-05
EP2920105B1 (fr) 2017-12-27
US20160272474A1 (en) 2016-09-22
AU2013347045A1 (en) 2015-06-11
BR112015009685A2 (pt) 2017-07-04
WO2014075921A1 (fr) 2014-05-22
DE102012110988A1 (de) 2014-05-15
DE102012110988B4 (de) 2021-12-23
AU2013347045B2 (en) 2017-02-02

Similar Documents

Publication Publication Date Title
DE19540956C1 (de) Servolenkung für Kraftfahrzeuge
EP1006041B1 (fr) Direction hydraulique assistée pour véhicules automobiles
EP0985591B1 (fr) Système de direction pour automobiles non guidées
EP2920105B1 (fr) Système de direction pour un chariot de manutention
DE10101827A1 (de) Lenkanordnung für Kraftfahrzeuge
DE19902107B4 (de) Verdrängungssteuervorrichtung für eine verstellbare Hydraulikeinheit
DE10257130B4 (de) Vollhydraulische Lenkung
EP1018292A2 (fr) Dispositif de levage pour bras inférieurs d'accouplement de tracteur
DE10337954A1 (de) Hilfskraftunterstütztes Lenksystem für ein Kraftfahrzeug, mit hydraulischer offener Mitte
DE102008048523A1 (de) Hydraulische Kolben-Zylinder-Baugruppe
DE19935073A1 (de) Steer-by-wire-Lenkung mit hydraulischem Druckspeicher
DE10037829A1 (de) Lenksystem für ein Fahrzeug
EP3172958B1 (fr) Véhicule automobile comprenant un dispositif d'attelage pour équipement
DE102007053694B4 (de) Fahrzeug-Lenksystem
DE10159297A1 (de) Zweikreisiges Steer-by-wire-Lenksystem mit zwei hydraulisch betriebenen Stellaggregaten
DE69916282T2 (de) Drehbewegliches hydrodynamisches verteilersystem zum lenken von fahrzeughinterachsen
WO1989004269A1 (fr) Dispositif de direction pour roues avant et arriere dirigeables de vehicules
DE20313104U1 (de) Baugruppe für ein Fahrwerkstabilisierungssystem
EP3652605A1 (fr) Levier de commande muni d'un guide à coulisse
DE102020210397B3 (de) Hydrostatische servoeinheit
DE3921869C1 (en) Compact loader for road surfacing machine - has powered cold grinder, hydraulic pumps and manual control lever
DE10060374A1 (de) Steer-by-Wire-Lenkung mit hydraulischem Feedback-Aktuator
DE102008031213A1 (de) Lenkeinrichtung für ein Radfahrzeug mit Achsschenkellenkung
DE102015214317A1 (de) Lenkaggregat und landwirtschaftliche Arbeitsmaschine
DE102012112214A1 (de) Lenkvorrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150528

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
TPAC Observations filed by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA

17Q First examination report despatched

Effective date: 20160818

RIC1 Information provided on ipc code assigned before grant

Ipc: B66F 9/075 20060101AFI20170105BHEP

Ipc: B62D 5/12 20060101ALI20170105BHEP

Ipc: B62D 7/08 20060101ALI20170105BHEP

Ipc: B66F 9/22 20060101ALI20170105BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20170306

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

INTC Intention to grant announced (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HUBTEX MASCHINENBAU GMBH & CO. KG

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20170817

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 958086

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013009140

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180327

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180327

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180328

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180427

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

REG Reference to a national code

Ref country code: DE

Ref legal event code: R026

Ref document number: 502013009140

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: COMBILIFT

Effective date: 20180927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

PLBP Opposition withdrawn

Free format text: ORIGINAL CODE: 0009264

PLBD Termination of opposition procedure: decision despatched

Free format text: ORIGINAL CODE: EPIDOSNOPC1

REG Reference to a national code

Ref country code: DE

Ref legal event code: R100

Ref document number: 502013009140

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

PLBM Termination of opposition procedure: date of legal effect published

Free format text: ORIGINAL CODE: 0009276

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

27C Opposition proceedings terminated

Effective date: 20190214

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20181031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181031

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181031

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171227

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20131030

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171227

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502013009140

Country of ref document: DE

Representative=s name: PATENTANWAELTE KLUIN DEBELIUS WEBER PARTG MBB, DE

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230904

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20231023

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231025

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20231031

Year of fee payment: 11

Ref country code: IE

Payment date: 20231019

Year of fee payment: 11

Ref country code: DE

Payment date: 20231031

Year of fee payment: 11

Ref country code: AT

Payment date: 20231019

Year of fee payment: 11